Joseph tells everyone to leave, except his brothers. He asks them to “Come closer.” A few verses later he says, “Here! Your own eyes see and the eyes of your brother Benjamin that it is my own mouth speaking to you” (Genesis 45:12). Rashi, suggests that the brothers needed further proof that Joseph was truly their brother so he draws them closer to reveal his heritage. “Your own eyes see [my glory] and that I am your brother for I am circumcised as you are and, furthermore, “That my mouth speaks to you” in the Holy Language [Hebrew].”
Pesach is to be celebrated throughout all the generations of the people of Israel wherever they lived. In Joshua chapter 5, the Israelites celebrate Pesach in Gilgal after taking flint knives and circumcising all the men who had come out of the wilderness. In 2 Kings chapter 23, King Josiah destroys all the high places and idols in Israel, and the nation celebrates Pesach in Jerusalem for the first time since the days of the Judges. In Ezra chapter 6, when the Israelites return from captivity in Babylon, everyone who renounced the pagan practices of the nations celebrated the Pesach.